通信技术
通信技術
통신기술
COMMUNICATIONS TECHNOLOGY
2013年
5期
4-8
,共5页
信道质量%循环平稳%多径衰落%信干噪比
信道質量%循環平穩%多徑衰落%信榦譟比
신도질량%순배평은%다경쇠락%신간조비
channel quality%cyclostationarity%multipath fading%signal-to-jamming-plus-noise ratio
利用信号的循环平稳特性可有效解决通信中的很多问题.在通信双方未知干扰信号先验知识时,信干噪比(SJNR,Signal-to-Jamming-Plus-Noise Ratio)可以描述人为有意干扰和噪声对通信信道的综合影响.分析典型人为音调干扰、加性高斯白噪声及多径衰落信号的循环平稳特性,得出结论:可利用通信信号、干扰及噪声三者不同的循环平稳特性进行SJNR估计,表征信道质量,为通信中的信道质量判决提供可靠依据.
利用信號的循環平穩特性可有效解決通信中的很多問題.在通信雙方未知榦擾信號先驗知識時,信榦譟比(SJNR,Signal-to-Jamming-Plus-Noise Ratio)可以描述人為有意榦擾和譟聲對通信信道的綜閤影響.分析典型人為音調榦擾、加性高斯白譟聲及多徑衰落信號的循環平穩特性,得齣結論:可利用通信信號、榦擾及譟聲三者不同的循環平穩特性進行SJNR估計,錶徵信道質量,為通信中的信道質量判決提供可靠依據.
이용신호적순배평은특성가유효해결통신중적흔다문제.재통신쌍방미지간우신호선험지식시,신간조비(SJNR,Signal-to-Jamming-Plus-Noise Ratio)가이묘술인위유의간우화조성대통신신도적종합영향.분석전형인위음조간우、가성고사백조성급다경쇠락신호적순배평은특성,득출결론:가이용통신신호、간우급조성삼자불동적순배평은특성진행SJNR고계,표정신도질량,위통신중적신도질량판결제공가고의거.
@@@@By utilizing the cyclostationarity of signals many problems in communication could be effectively solved. Signal-to-jamming-plus-noise ratio (SJNR) could describe the combined effects of jamming and noise on the communication system when both receiver and transmitter have no prior knowledge of the jamming signal. Based on analysis of the typical tone-jamming, additive Gaussian white noise and multipath fading signals cyclostationarity, the following conclusions could be obtained: the differences of among communication signal, jamming and noise on cyclostationarity can be used to estimate the SJNR values, further represent the channel quality and provide reliable basis for channel quality decision in communication.
